Aquifer Mapping studies and Management Plan has been carried out in West Garo Hills district, Meghalaya under National Aquifer Mapping and Management Plan (NAQUIM) programme with an objective to know the different aquifer system prevailing in the study area, to decipher the vertical and lateral extend of the aquifer down to the depth of 200 m, its characteristic, quantity as well as quality so as to bring a complete sustainable and effective aquifer management plan for ground water resources development in the study area. This study has been done through multi-disciplinary approach so as to achieve the said objectives. The total coverage area of aquifer mapping and management plan is 1830 sq.km out of 2811 sq.km of the district and is underlain by unconsolidated rock (alluvium), semi consolidated rocks (sandstone and shale) and consolidated rocks (granite gneiss). Geomorphologically, the district represents a remnant of an ancient plateau of Precambrian Indian shield block, uplifted to its present height due to tectonic activities in the past. The southern and northern parts form a platform on which Tertiaries were deposited in the post- cretaceous period. Agriculture is the main stays of livelihood of the people in the district. The importance of agriculture in the life of the people is reflected in the population which is predominantly rural. The main crop being paddy, the other crops cultivated in the district are mustard, sugarcane, jute, potato, tapioca, cotton etc. The aquifer system in this district can be divided as a two aquifer system viz., first aquifer (shallow) and second aquifer (deeper). Shallow or first aquifer consists of weathered residuum where ground water occurs under water table condition and is mainly developed by construction of dug wells or shallow bore wells as hand pump. The second aquifer is the deeper aquifer which tapped the fractured zone. Based on the study of litholog and analysis of depth of construction of dug wells and shallow bore wells, it is found that the first aquifer occur within 2 to 40 m bgl. Ground water in the second aquifer occurs under semi-confined to confined condition in the fractures upto the maximum depth of 200 m bgl. Aquifer I is the unconfined aquifer where the tapping of aquifer zone ranges within 2 to 40 m depth and generally exhibits unconfined nature of the aquifer. Aquifer IIis the deeper aquifer which occurs as semi confine to confine condition where ground water is found in granular zone of sand of alluvium formation and the fractured zone of consolidated Sandstone and granite gneiss. The number of fractures and granular zones varies widely which show the complexity of the hydrogeology of consolidated hard rock formation.